title: Production of bacterial endoglucanase from pretreated oil palm empty fruit bunch by bacillus pumilus EB3.
abstract: In this study, endoglucanase was produced from oil palm empty fruit bunch (OPEFB) by a locally isolated aerobic bacterium, Bacillus pumilus EB3. The effects of the fermentation parameters such as initial pH, temperature, and nitrogen source on the endoglucanase production were studied using carboxymethyl cellulose (CMC) as the carbon source. Endoglucanase from B. pumilus EB3 was maximally secreted at 37 degrees C, initial pH 7.0 with 10 g/l of CMC as carbon source, and 2 g/l of yeast extract as organic nitrogen source. The activity recorded during the fermentation was 0.076 U/ml. The productivity of the enzyme increased twofold when 2 g/l of yeast extract was used as the organic nitrogen supplement as compared to the non-supplemented medium. An interesting finding from this study is that pretreated OPEFB medium showed comparable results to CMC medium in terms of enzyme production with an activity of 0.063 U/ml. As OPEFB is an abundant solid waste at palm oil mills, it has the potential of acting as a substrate in cellulase production.
authors.affiliation: Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
authors.forename: Hidayah
authors.initials: H
authors.lastname: Ariffin
authors.forename: Mohd Ali
authors.initials: MA
authors.lastname: Hassan
authors.forename: Umi Kalsom Md
authors.initials: UK
authors.lastname: Shah
authors.forename: Norhafizah
authors.initials: N
authors.lastname: Abdullah
authors.forename: Farinazleen Mohd
authors.initials: FM
authors.lastname: Ghazali
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Shirai
mesh_terms: D028023:Arecaceae / Q000382:microbiology*; D001407:Bacillus / Q000201:enzymology*; D019149:Bioreactors / Q000382:microbiology*; D018929:Cell Culture Techniques / Q000379:methods*; D005638:Fruit / Q000382:microbiology*; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry* / Q000378:metabolism*; D012260:Ribonucleases / Q000378:metabolism*
chemical_list: D010938:Plant Oils; D000073878:Palm Oil; D012260:Ribonucleases; C091047:Bacillus pumilus ribonuclease